Multiple ways to Call REST API from Nodejs Application| Consume REST API

Sometimes, Application requires to call Remote or external API from a nodejs Application.

It covers following items

• How to call remote REST API from nodejs application
• How to get data from http get request data
• How to make http get and post request
• Get HTTP request body in nodejs
• Process post request in NodeJS

Nodejs is server side code based on npm libraries.

Consume REST API involves http requst of type GET/POST/DELETE/PATCH

• http/https inbuilt
• axios
• fetch

It involves sending request of json data and receiving the http Response with

For calling any rest API, We need followings

• REST API URL
• Request type like GET/POST/DELETE/PATCH
• http request data type
• expected response type to handle it
• content-type and accept request headers
• Any security or authorization headers

using http/https client to call remote API

http and https are a inbuilt module, can be used as server and client

If request url is https, We can use https module, otherwise can use http module Here is an syntax to make a http url request

http.get( options, responsecallback);
http.post( options, responsecallback);

• First import using require keyword
• call get with Url and returns call back

const http = require('https');
const url = "https://jsonplaceholder.typicode.com/posts";

http.get(url, function (response) {
    let posts = "";

    response.on("data", function (data) {
        posts += data.toString();
    });

    response.on("end", function () {
        console.log(posts.length);
        console.log(posts.toString());
    });

});